Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
04/1983
04/19/1983US4380739 Electronic differential controller
04/19/1983US4380737 Fast AGC slew circuit
04/19/1983US4380711 Linearization circuit
04/12/1983US4379995 Gain controlled amplifier
04/06/1983EP0075647A1 Circuit for measuring the reception quality of an FM receiver
04/05/1983US4379272 AGC Circuit with level-compensating input
04/05/1983US4379269 RF Amplifier having automatic gate bias switching in response to band selection
04/05/1983CA1144081A1 Noise removing apparatus
03/1983
03/29/1983US4378527 Device for amplifying and sampling analog signals
03/22/1983US4377832 Voltage transient suppressor circuit
03/16/1983EP0074294A1 Hyperfrequency amplifier with field effect transistors, particularly for a Doppler radar
03/15/1983CA1142859A1 Sound reproduction in a space with an independent sound source
03/08/1983US4376310 Mobile data terminal channel busy arrangement
03/08/1983US4376267 Video preamplifier for laser systems
03/08/1983CA1142608A1 Symmetrically gain controlled differential amplifier
03/08/1983CA1142597A1 Radio-frequency head having a self-adaptive dynamic range
03/08/1983CA1142596A1 Intermediate frequency detection circuit
03/08/1983CA1142445A1 Signal-controllable attenuator employing a digital-to-analog converter
03/01/1983CA1142237A1 Radioelectric apparatus for collecting data coming from several stations
02/1983
02/23/1983EP0072741A2 Programmable gain integrator stage including means for offset voltage elimination
02/22/1983US4375051 Automatic impedance matching between source and load
02/15/1983US4374300 Sound mixer devices
02/15/1983CA1141443A1 Circuit for controlling the weighting coefficients in an analog adaptive equalizer
02/15/1983CA1141303A1 Method and system of controlling sound and effects devices by a film strip
02/09/1983EP0071594A1 Adjustment device for the level control of audio signals
02/08/1983US4373139 Detectors
02/01/1983US4371981 Spectral squelch
02/01/1983US4371842 Self-adjusting dual mode automatic gain control circuit
02/01/1983US4371841 Circuit arrangement for eliminating turn-on and turn-off clicks in an amplifier
02/01/1983US4371840 Gain control circuit for pulse width modulation amplifier
01/1983
01/25/1983US4370725 Method of and circuit arrangement for automatic signal-level control
01/25/1983US4370681 Gain control circuit for noise reduction system
01/25/1983US4370622 IMD Limiter
01/25/1983US4370522 FM Receiver for use with motorcars
01/25/1983CA1140224A1 Voltage controlled attenuator
01/25/1983CA1140216A1 Data modem false equilibrium circuit
01/25/1983CA1140211A1 Circuit system for the generation of a direct control voltage depending upon an alternating voltage
01/19/1983EP0069843A1 LF amplifier for a television receiver
01/18/1983US4369414 High-frequency input circuit for two inputs
01/18/1983US4369411 Circuit for converting single-ended input signals to a pair of differential output signals
01/18/1983US4369410 Monolithically integrable transistor amplifier having gain control means
01/18/1983CA1139850A1 Amplifier arrangement with variable gain factor
01/18/1983CA1139846A1 Receiver input circuit
01/12/1983EP0069515A2 A digital automatic gain control circuit
01/12/1983EP0069214A1 Circuit for measuring the reception quality of an FM receiver
01/11/1983US4368435 System for maximum efficient transfer of modulated audio frequency energy
01/05/1983EP0068690A1 Radio communications receivers
01/05/1983EP0068185A1 Circuit arrangement for generating a D.C. control voltage dependent upon an A.C. voltage
12/1982
12/28/1982US4366450 Automatic gain control circuit
12/28/1982US4366449 Integrated voltage control variable gain circuit and a signal transmission circuit using the same
12/28/1982US4366443 Television intermediate frequency amplifier
12/28/1982US4366442 Amplifier with muting circuit
12/28/1982US4366441 Signal-muting circuit for bridge amplifier
12/22/1982EP0067585A2 Noise sensitivity reduction for a TV receiver AGC system
12/21/1982US4365278 Device for detecting non-recorded portions on magnetic tape
12/21/1982US4365208 Gain-controlled amplifier using a controllable alternating-current resistance
12/21/1982CA1138058A1 Hybrid automatic gain control circuit
12/21/1982CA1138057A1 Signal level detector
12/14/1982CA1137634A1 Method and device for amplifying multiplexed signals
12/14/1982CA1137589A1 Smoke detector
12/08/1982EP0066110A2 Noise removing apparatus in an FM receiver
12/07/1982US4363001 Digital gain control apparatus
12/07/1982CA1137178A1 Method and apparatus for controlling bias voltage in regulating amplifiers
11/1982
11/30/1982US4361815 Operational amplifier with programmable gain
11/30/1982US4361813 FM Audio demodulator with dropout noise elimination circuit
11/24/1982EP0065339A1 Radiometer
11/23/1982US4360929 Automatic gain control circuit
11/23/1982US4360787 Digitally controlled wide ranch automatic gain control
11/23/1982US4360786 Variable-gain differential amplifier
11/16/1982US4359780 High speed squelch circuit
11/16/1982US4359604 Apparatus for the detection of voice signals
11/16/1982US4359602 Multiple input audio program system
11/16/1982US4359600 Programable low impedance digital attenuators
11/09/1982US4358738 Signal presence determination method for use in a contaminated medium
11/09/1982CA1135350A1 Inhibit circuit for a differential amplifier
11/02/1982US4357577 Instantaneous floating point amplifier
11/02/1982US4357492 Automatic microphone mixing apparatus
11/02/1982CA1134918A1 Protected amplifier apparatus
10/1982
10/27/1982EP0063364A1 I.F. stage gain control circuit
10/26/1982US4356517 PCM Audio reproducing system
10/26/1982US4356350 FM Receiver
10/19/1982US4355417 Squelch control circuit for amplitude modulated RF receivers
10/19/1982US4355414 Automatic gain control system
10/19/1982US4355407 Device for disconnecting the receiver in case of a small signal-to-noise ratio for a digital-modulated radio system
10/19/1982US4355402 Data modem false equilibrium circuit
10/12/1982US4354163 High voltage buffer amplifier
10/12/1982CA1133595A1 Amplifier load correction system
10/12/1982CA1133593A1 Thermally compensated variable gain differential amplifier
10/05/1982US4353037 Amplifier protection circuit
10/05/1982US4353036 Field effect transistor amplifier with variable gain control
09/1982
09/28/1982US4352207 Noise suppression circuit
09/28/1982US4352089 Voice warning system for an automotive vehicle
09/28/1982US4352030 Pulse detectors
09/22/1982EP0060342A1 Level converter
09/21/1982US4350959 Feedback signal amplifier
09/15/1982EP0060164A1 Sliding class A broadband linear amplifier with low power consumption, and circuit comprising at least one such amplifier
09/14/1982US4349779 Volume control apparatus
09/14/1982US4349681 2-Amino-3-chloro-5-trifluoromethylpyridine
09/14/1982CA1131722A1 Pulse width modulating circuit
09/07/1982CA1131356A1 Analog recording on magnetic media